Factors and Multiples
In this section there are activities to help with work on factors and multiples. These make great starters for all age groups to quickly test their basic skills using the QuickQuestion Interface ©.
Use this activity to calculate the factors of any number. This naturally leads in to looking at Perfect Numbers and Prime Decomposition too.

A selection of activities on finding the prime decomposition of numbers.

A selection of activities on finding the Highest Common Factor and Lowest Common Multiple of numbers.

A 100 square makes a great tool for looking at number patterns, or for use in using the Sieve of Eratosthenes. This fully interactive one allows you to check work quickly when working with multiples.

This 100 square is slightly different to the one above, and can be used to check answers using different colours. It also has a wider range of types of numbers built in.

If you like the page then tweet the link using the button on the right.
